William h



(No Model.)

' W. H. BURNETT.

Milk Can.

N0. 231,53L Patented Aug. 24,1880.

\A/ITHESSES-S N.PETEH$, FHOTD-LITHOGRAPHER. WASHINGTON. D O.

UNITED STATES PATENT Orrica.

WILLIAM H. BURNETT, OF MOUNT KISGO, NEW YORK.

MILK-CAN.

SPECIFICATION forming part of Letters Patent No. 231,531, dated August 24, 1880.

(No model.)

To all whom it may concern:

Be itknown that I, WILLIAM H. BURNETT, a citizen of the United States, residing at Mount Kisco, Westchester county, in the State of New York, have invented certain new and useful Improvements in the Construction of Milk-Cans, of which the following is a specification.

The invention applies to the large cans in which milk is transported in cars and wagons. It allows the ordinary conventional form, with the advantages and convenience pertaining thereto. It avoids the presence of a seam at the junction of the body with the breast, which has always been a source of serious mischief.

In the rough handling of cans, particularly when empty, the bodies are liable to be brought very forcibly together. The lower end is fortified by the presence of the bottom, as also usually by additional hooping; but the upper end, where the body joins to the breast, although it may be fortified by one or more hoops, is still peculiarly liable to blows which temporarily or permanently change its shape. The seam always heretofore produced around that part is one of the first places to fail. In the attempt to give it extra security the breast metal has been allowed to project down or lap past the upper edge of the body for a couple of inches, more or less, with the edges soldered both at the top and bottom of the lap. This increases the strength, but involves a new difficulty. When the metal is strained the inner seam is liable to open a little, allowing the milk to penetrate into the thin space between the inner and the outer metal. It is impossible to subsequently dislodge it, and becoming decayed at that point, a change is initiated through the small leak which communicates with the interior, and sours the whole contents of the cans.

The neck and mouth-piece or bowl are not much liable to injury. I form the neck double. I by that means secure an unusally strong and perfect hold on the bowl and breast.

The bottoms of large milk-cans are frequently renewed. No means have been devised which will give such a thickness of the tin coating on the inside as will endure for a long time. The milk will not keep properly when it meets the naked iron. The body, breast, neck, and bowl will usually outlast two or three bottoms.

My construction facilitates the removal and renewal of the bottom. It is important that the bottom be swelled downward, and that its edges be strongly held at a proper distance above the lower edge of the body to allow therefor. It is necessary to hold this edge up strongly, and also to smoothly and continuously solder theinner edge of the joints. The ordinary mode of attaining this is to form the bottom with a deep flange, which shall fit tight in the lower part of the body. The additional hoop applied on the interior and riveted is not soldered, and maybe easily removed on cutting off the rivets; but the forcing out of the bottom as heretofore constructed involves peculiar difficulties. The solder must be melted all the wayaround, and a strong mechanical force applied at the same time to overcome the friction and force the bottom downward.

My improvement attains the end and avoids this inconvenience in the repairing. I make a corresponding flange, fitting in the interior of thebody at the base. It is made separate from the bottom, with a slight internal lip at its upper edge, and is soldered permanently in the interior of the body. I form the sheet which extends across the bottom without any flange, but simply with a smooth-finished edge, which applies up closely against the under face of the aforesaid lip. On applying and properly riveting the hoop below, and thus holdingthe bottom firmly up against that lip, the joint between the plane-edged bottom and that flanged ring is easily soldered from the interior to make a tight joint in the manufacture or repair of the can, and it is also easily unsoldered and liberated. To effect this latter it is only necessary to first take out the riveted hoop, and then to soften the solder around the edge of the bottom, which need not be done simultaneously all around, as in the other case, but may be begun at one point and made to progress in the obvious easy manner.

The accompanying drawings form a part of this specification, and represent a can constructed according to my invention.

Figure l is a central vertical section, and Fig. 2 is a horizontal section on the line 8 s in Fig. 1.

Similar letters of reference indicate parts in both the figures.

like

A is the cylindrical part of the body, formed of stout tinned iron, which may be bent around and joined along the vertical scam (I by rivets, and also by solderingin the usual manner. A is the breast. It is formed by contracting the metal at the upper edge. It is formed in one with the body. It is a continuation of the same sheet of metal. It may be formed inward by spinning on a suitable chuck.

The extent to which iron may be thus spun inward and contracted without forming objectionable wrinkles will vary with different material. Ordinary metal-as charcoal XXX- will bear spinning inward to an extent about equal to the ordinary breast of a large milkcan.

If I find it expedient, in order to favor the iron, the neck and cover will be made a little larger in proportion than the usual rule; but the breast may be spun inward sufticieut to serve the ordinary functions in the ordinary way.

B is the internal neck-piece. It is formed with a perfectly cylindrical interior to match a corresponding cover, and flanged outward obliquely at the upper and lower edges.

0 is a corresponding, but slightly narrower, outer neck. I) is the bowl or mouth. The bottom is a simple disk, not flanged at the edge, but properly convexed downward. This is marked E.

G G is a flanged ring of corresponding or somewhat thinner tinned iron, (i being the body of the ring, and G an internal flange formed at the top. H is the stout ordinary removable hoop, held by rivets h.

The flanged ring G G is permanently soldered to the interior of the body A, either along its upper edge alone or, preferably, over the whole surface in contact. The bottom E is held up tightly against the under face of the 'flange G by the hoop II, and the surfaces are tightly soldered from the interior in the ordinary manner.

It will be observed that my breast may have the same curve as has long been successfully I employed In milk-cans, and which is found to so elfectually resist an upward throw of the milk in being agitated in carriage.

My invention does not interfere with the application of any of the ordinary attachments or strengthening means.

I propose especially to apply a strengthening-hoop around the body A, immediately below the breast, and on such hoop I can attach the ordinary handle with the horn for the milk-dipper, &c. Such will usually be employed, but I have not deemed it necessary to represent them. They are not essential to the invention, and their representation would tend to obscure it.

Modifications may be made in the proportions of all the parts. I can make more than one vertical joint, a, and proposetodo so whenever necessary in forming large cans.

The spinning of the breast inward must be effected before the riveting of that portion of the joint (1. I propose to afterward secure the joint to up and down the breast by riveting, and also to solder it, so as to form substantially the same joint at that point as at others; but this may be varied.

I claim as my invention- 1. The combination of the double neck B 0, having an upper and lower pair of flanges, as shown, with the mouth D and body A inserted, respectively, between the upper and lower pair of flanges, substantially as and for the purpose set forth.

2. In a milk-can, the combination of the lipped ring (l G, permanently attached to the body A, with the bottom E confined under the lip G and soldered thereto, and resting upon the stifi'eningriug at the bottom, arranged and combined as shown, and for the purpose set forth.

In testimony whereof I have hereunto set my hand at Mount Kisco, Westchester county, New York, this 8th day of March, 1880, in the presence of two subscribing witnesses.

WILLIAM H. BURNETT.

Witnesses:

Geo. B. DAVIS, MORRIS LISSAUER. 

